MT 644-1997
Active
MT/T 679-1997
Abolished
Industry standards-Coal
MT/T 679-1997 General technical condition of Rayleigh wave seismograph for mining
MT/T 679-1997 General technical condition of Rayleigh wave seismograph for mining
Basic Information
Standard Code:
MT/T 679-1997
Standard Type:
Industry standards
Standard Status:
Abolished
is_force_gb:
no
CCS Name:
Geophysical exploration equipment
ICS Name:
Other mining equipment
Publish Date:
1997-12-30
Implement Date:
1998-06-01
Pages:
12 pages
Development Information
Referenced Standards
GB 191-1990
GB/T 998-1982
GB 2423.1-1989
GB 2423.2-1989
GB/T 2423.4-1993 Basic environmental testing procedures for electric and electronic products—Test Db:Damp heat, cyclic
GB 3836.1-1983
GB 3836.4-1983
GB/T 3873-1983 General specifications for products packaging of communication equipments
GB/T 4942.2-1993 Degrees of protection provided by enclosures for low-voltage apparatus
GB/T 13384-1992 General specifications for packagings of mechanical and electrical products
MT 209-1990 The general technical requirements for electrical products used in coal mine communication, detection, and control
MT 210-1990 The basic test methods for electrical products used in coal mine communication, detection, and control
MT 470-1996 mine seismic exploration instrument
Related Standards
MT 646-1997
Abolished
MT 646-1997 Frictional metal prop
MT 668-1997
Replaced
MT 668-1997 Technical Conditions for Flame-Retardant Steel-Mesh-Core Conveying Belt for Coal Mines
MT 669-1997
Active
MT 669-1997 Technical condition of fire-resistant steel-cable conveyor-belt in coal mining
MT/T 154.7-1997
Active
MT/T 154.7-1997 Model designation of separating equipment for coal
MT/T 660-1997
Active